WO2023280222A1

WO2023280222A1 - Lens assembly and electronic device

Info

Publication number: WO2023280222A1
Application number: PCT/CN2022/104162
Authority: WO
Inventors: 李俊鸿; 谢承翰
Original assignee: 维沃移动通信有限公司
Priority date: 2021-07-08
Filing date: 2022-07-06
Publication date: 2023-01-12
Also published as: CN113452889A

Abstract

The present application discloses a lens assembly and an electronic device. The lens assembly comprises: a base; an imaging module, the imaging module being provided on the base; a liquid lens, the liquid lens being deformable, the liquid lens being capable of focusing during the deformation of the liquid lens, and the liquid lens and the imaging module being provided at intervals in the axial direction of the imaging module; a piezoelectric element provided close to the liquid lens; and an electrode connected to the piezoelectric element, when the electrode applies a voltage to the piezoelectric element, the piezoelectric element deforming in the axial direction of the liquid lens, and the deformation of the piezoelectric element driving the liquid lens to deform.

Description

Lens Assemblies and Electronics

Cross References to Related Applications

This application claims the priority of a Chinese patent application with application number 202110771199.8 and titled "Lens Assembly and Electronic Equipment" filed with the China Patent Office on July 08, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application belongs to the technical field of terminals, and in particular relates to a lens assembly and electronic equipment.

Background technique

Liquid lenses are more and more applied to mobile phones. Different from traditional lenses, liquid lenses are optical components made of liquid without mechanical connection. During use, liquid lenses have inaccurate focus and are prone to shake problems. As a result, the camera effect is not good, and a bad experience is brought to the user.

Contents of the invention

The purpose of the embodiments of the present application is to provide a lens assembly and an electronic device to solve the problems of inaccurate focusing and jitter of a liquid lens.

In the first aspect, the embodiment of the present application provides a lens assembly, including:

base;

an imaging module, the imaging module is arranged on the base;

A liquid lens, the liquid lens can be deformed, and the liquid lens can focus during the deformation process of the liquid lens, and the liquid lens and the imaging module are arranged at intervals in the axial direction of the imaging module;

a piezoelectric element, the piezoelectric element is disposed adjacent to the liquid lens;

An electrode, the electrode is connected to the piezoelectric element, and when the electrode applies a voltage to the piezoelectric element, the piezoelectric element deforms along the axial direction of the liquid lens, and the piezoelectric element The deformation drives the deformation of the liquid lens.

Wherein, there are multiple piezoelectric elements, and multiple piezoelectric elements are arranged on one side of the liquid lens and arranged at intervals along the circumference of the liquid lens.

Wherein, the piezoelectric element is arranged on a side of the liquid lens close to the imaging module.

Wherein, the electrodes include:

The first electrode and the second electrode, the piezoelectric element is located between the first electrode and the second electrode, the first electrode and the second electrode are arranged at intervals along the axial direction of the liquid lens .

Among them, also include:

An adjustment ring, the adjustment ring is arranged between the piezoelectric element and the liquid lens.

Wherein, the base includes:

A housing, the housing is provided with an accommodating cavity, and the imaging module is arranged in the accommodating cavity;

A bracket, the bracket is arranged on the housing, and the liquid lens is arranged on the bracket.

Wherein, the housing includes:

a first housing and a second housing, the accommodating cavity is provided on the first housing, and the first housing is connected to the second housing;

The bracket includes a leg and an annular frame body, one end of the leg is connected to the frame body, and the other end of the leg is connected to the first shell and the second shell.

Wherein, one end of the electrode is connected to the piezoelectric element, and the other end of the electrode extends into the accommodating cavity.

Among them, also include:

The first cover and the second cover, both of the first cover and the second cover are ring-shaped, and the edge of the liquid lens is located between the first cover and the second cover , the second cover is disposed on the bracket.

Wherein, the lens assembly also includes:

A control module, the control module controls the electrodes to apply voltage to at least one piezoelectric element.

Wherein, there are multiple piezoelectric elements, and the control module controls the electrodes to apply the same voltage to each piezoelectric element.

Wherein, there are multiple piezoelectric elements, the control module controls the electrodes to apply voltages to the piezoelectric elements, and the voltages applied to at least two piezoelectric elements are different.

In a second aspect, an embodiment of the present application provides an electronic device, including the lens assembly described in the foregoing embodiment.

The lens assembly of the embodiment of the present application includes: a base; an imaging module, the imaging module is arranged on the base; a liquid lens, the liquid lens is deformable, and the liquid lens is deformed during the deformation process of the liquid lens The liquid lens can be focused, and the liquid lens and the imaging module are arranged at intervals in the axial direction of the imaging module; the piezoelectric element is arranged adjacent to the liquid lens; the electrode, the An electrode is connected to the piezoelectric element, and when the electrode applies a voltage to the piezoelectric element, the piezoelectric element deforms along the axial direction of the liquid lens, and the deformation of the piezoelectric element drives the Liquid lens distortion. In the lens assembly of the present application, the liquid lens is deformable, and the piezoelectric element is arranged adjacent to the liquid lens, and a voltage can be applied to the piezoelectric element through the electrode, and when the electrode applies a voltage to the piezoelectric element , the piezoelectric element can be deformed along the axial direction of the liquid lens, the deformation of the piezoelectric element drives the deformation of the liquid lens, and the deformation of the liquid lens can be controlled as required, and the focusing of the lens can be made by the deformation of the liquid lens It is more accurate, and can also avoid the problem of lens shaking and improve the imaging effect; the displacement change during driving is more accurate by driving the deformation of the liquid lens through the piezoelectric element, and the displacement deviation in the direction perpendicular to the optical axis of the liquid lens is less likely to occur. Move, take up less space, and improve user experience.

Description of drawings

FIG. 1 is a schematic structural view of a lens assembly in an embodiment of the present application;

Fig. 2 is a schematic diagram of piezoelectric element driving liquid lens deformation;

FIG. 3 is another schematic structural view of the lens assembly in the embodiment of the present application;

Fig. 4 is an exploded schematic diagram of the lens assembly in the embodiment of the present application;

Fig. 5 is a schematic structural diagram of the cooperation between the electrode and the liquid lens;

Fig. 6 is another structural schematic diagram of the cooperation between the electrode and the liquid lens;

Fig. 7 is a schematic diagram when the lens assembly is at a normal focal length;

FIG. 8 is a schematic diagram of the lens assembly focusing;

FIG. 9 is a schematic diagram of the anti-shake of the lens assembly.

reference sign

Imaging module 10; first housing 11; second housing 12; base 13; bottom plate 14;

Liquid lens 20; first cover 21; second cover 22;

piezoelectric element 30;

The first electrode 41; the second electrode 42;

Adjusting ring 50; leg 51; frame body 52.

specific embodiment

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

The lens assembly provided by the embodiment of the present application will be described in detail below through specific embodiments and application scenarios as shown in FIG. 1 to FIG. 9 .

As shown in Figures 1 to 9, the embodiment of the present application provides a lens assembly, including: a base, an imaging module 10, a liquid lens 20, a piezoelectric element 30 and electrodes, wherein the imaging module 10 is arranged on the base Above, the base may be provided with an accommodating cavity, and the imaging module 10 may be placed in the accommodating cavity to protect the imaging module 10 . The liquid lens 20 can be deformed. During the deformation process of the liquid lens 20, the liquid lens 20 can focus. When the liquid lens 20 needs to be focused, the liquid lens 20 can be deformed accordingly, and then the liquid lens 20 can be precisely focused. The liquid lens 20 and the imaging module 10 are arranged at intervals in the axial direction of the imaging module 10, the axes of the liquid lens 20 and the imaging module 10 can be collinear, and the piezoelectric element 30 can be arranged adjacent to the liquid lens 20, for example, piezoelectric The element 30 can be arranged on one side or both sides of the liquid lens 20 , the piezoelectric element 30 can abut against the surface of the liquid lens 20 , and the piezoelectric element 30 can also be separated from the surface of the liquid lens 20 by a certain distance. The electrodes can be connected to the piezoelectric element 30, and a voltage can be applied to the piezoelectric element 30 through the electrodes. When the electrode applies a voltage to the piezoelectric element 30, the piezoelectric element 30 can deform along the axial direction of the liquid lens 20. The deformation of the element 30 can drive the liquid lens 20 to deform, and the deformation of the liquid lens 20 can make the focus of the lens more precise, and can also avoid the problem of lens shaking.

In the lens assembly of the present application, the liquid lens 20 can be deformed, the piezoelectric element 30 can be arranged adjacent to the liquid lens 20, and a voltage can be applied to the piezoelectric element 30 through the electrodes. The electric element 30 can be deformed along the axial direction of the liquid lens 20, the deformation of the piezoelectric element 30 drives the deformation of the liquid lens 20, and the deformation of the liquid lens 20 can be controlled as required, and the focus of the liquid lens 20 can be adjusted through the deformation of the liquid lens 20, which can It makes the focus of the lens more precise, and can also avoid the problem of lens shaking, and improve the camera effect. In addition, driving the deformation of the liquid lens 20 through the piezoelectric element 30 can make the displacement change during driving more accurate, and the displacement deviation in the direction perpendicular to the optical axis of the liquid lens is less likely to occur, occupying a small space, and improving user experience.

In some embodiments, there may be multiple piezoelectric elements 30, such as four, multiple piezoelectric elements 30 may be arranged on one side of the liquid lens 20, and multiple piezoelectric elements 30 may be arranged along the circumferential direction of the liquid lens 20. Set at intervals, a plurality of piezoelectric elements 30 can be evenly spaced along the circumference of the liquid lens 20, and force can be applied to different parts of the liquid lens 20 according to actual needs, so that the liquid lens 20 produces different deformations, thereby realizing the liquid lens. 20's precise focus and anti-shake. Wherein, the piezoelectric element 30 can be arranged on the side of the liquid lens 20 close to the imaging module 10 , which is convenient for installation and cooperation, for applying force, and for protecting the piezoelectric element 30 through the liquid lens 20 .

According to some embodiments, as shown in FIG. 2 , FIG. 4 , and FIG. 5 to FIG. 9 , the electrodes may include: a first electrode 41 and a second electrode 42 , and the piezoelectric element 30 may be located between the first electrode 41 and the second electrode 42 Between, the first electrode 41 and the second electrode 42 can be arranged at intervals along the axial direction of the liquid lens 20, the first electrode 41 can be located between the piezoelectric element 30 and the liquid lens 20, through the first electrode 41 and the second electrode 42 A voltage can be applied to the piezoelectric element 30 so that the liquid lens 20 is deformed. This application utilizes the characteristics of the inverse piezoelectric effect. When the electrodes apply voltage to the piezoelectric element 30, since the displacement parallel to the optical axis is proportional to the voltage, the piezoelectric element 30 is driven to produce proportional compression or stretching along the optical axis. Displacement (compression and stretching voltage directions are opposite), so that it can precisely control the displacement on the optical axis, so as to realize the precise control function of lens focusing and anti-shake. The first electrode 41 and the second electrode 42 can be respectively led out to be connected with a terminal device (such as a mobile phone) to drive a voltage, so that the piezoelectric element 30 produces a compression or tension displacement along the optical axis.

In the embodiment of the present application, as shown in Fig. 2, Fig. 4, Fig. 7 to Fig. 9, the lens assembly further includes: an adjustment ring 50, the adjustment ring 50 can be arranged between the piezoelectric element 30 and the liquid lens 20, in When the piezoelectric element 30 is deformed, the piezoelectric element 30 exerts a force on the adjustment ring 50, the liquid lens 20 can be deformed through the adjustment ring 50, and the displacement generated by the piezoelectric element 30 can be evenly transmitted to the liquid lens through the adjustment ring 50. On the lens 20, precise focusing and anti-shake of the liquid lens 20 can be realized. There can be a plurality of piezoelectric elements 30 , and the plurality of piezoelectric elements 30 can be evenly arranged along the circumference of the adjustment ring 50 , so that a uniform and stable force can be applied to the liquid lens 20 through the adjustment ring 50 . The liquid lens 20 can be circular, and the axis of the adjustment ring 50 can be collinear with the axis of the liquid lens 20, so that the displacement generated by the piezoelectric element 30 can be evenly transmitted to the liquid lens 20 through the adjustment ring 50, so that the liquid lens 20 Accurate focusing and anti-shake are possible.

In some embodiments, the piezoelectric element 30 may be arranged on the side of the liquid lens 20 away from the imaging module 10 , and the piezoelectric element 30 may abut against or be connected to the surface of the liquid lens 20 on the side away from the imaging module 10 , For example, the piezoelectric element 30 can stop at the edge area of the liquid lens 20, and a voltage can be applied to the piezoelectric element 30 through the electrodes. The deformation in the axial direction of the piezoelectric element 30 can drive the deformation of the liquid lens 20, and the deformation of the liquid lens 20 can make the focus of the lens more accurate, and can also avoid the problem of lens shaking.

The number of piezoelectric elements 30 can be multiple, such as two or four, and a plurality of piezoelectric elements 30 can be evenly spaced along the circumference of the liquid lens 20, and the electrodes can be controlled to apply the same pressure to each piezoelectric element 30. Voltage, so that each piezoelectric element 30 produces the same force, so that the liquid lens 20 can produce uniform and symmetrical deformation, and then the precise focusing of the liquid lens 20 can be realized. Voltage can be applied to one or more piezoelectric elements 30 as required, so that the liquid lens 20 can produce the required deformation, and then realize precise focusing and anti-shake of the liquid lens 20 . For example, there can be multiple piezoelectric elements 30, and different voltages can be applied to at least two piezoelectric elements 30 through the electrodes, so that different parts of the liquid lens 20 are deformed, and displacements are generated through different deformations, thereby playing the role of Anti-shake effect.

In some embodiments, the base may include a housing and a bracket, wherein the housing is provided with an accommodation chamber, the imaging module 10 may be disposed in the accommodation chamber, the imaging module 10 may be protected through the accommodation chamber, and the bracket is disposed in the housing. Generally, the liquid lens 20 is arranged on the bracket, and the liquid lens 20 is spaced apart from the imaging module 10 by a certain distance.

In the embodiment of the present application, as shown in FIG. 3, FIG. 4, FIG. 7 to FIG. Above, the first housing 11 is connected to the second housing 12, the bracket may include a leg 51 and an annular frame body 52, the liquid lens 20 may be arranged on the frame body 52, and the axes of the liquid lens 20 and the frame body 52 may be collinear , the legs 51 can have a plurality, such as four, a plurality of legs 51 can be evenly spaced along the circumference of the frame body 52, one end of the legs 51 can be connected to the frame body 52, and the other end of the legs 51 can be connected to the first housing 11 is connected to the second shell 12, optionally, the other end of the leg 51 can be located between the first shell 11 and the second shell 12, and the leg 51 can be fixed through the first shell 11 and the second shell 12 , play a role in constraining the displacement of the bracket.

Wherein, as shown in FIG. 3 and FIG. 4 , the first housing 11 may include a base 13 and a bottom plate 14, the base 13 is provided with a cavity penetrating along the length direction of the base 13, the bottom plate 14 is fixedly connected to one end of the base 13, The bottom plate 14 and the base 13 form an accommodation cavity, so that the imaging module 10 can be installed through the accommodation cavity. The base 13 can be provided with a raised portion, and the second electrode 42 can be attached and fixed on the raised portion. Through the first housing 11 and the second The housing 12 can function to protect the components inside the housing.

Optionally, one end of the electrode can be connected to the piezoelectric element 30, and the other end of the electrode can extend into the housing cavity, and can extend along the inner side wall of the housing cavity; optionally, the other end of the electrode can extend from the inner side of the housing cavity The wall is extended to facilitate the routing of electrodes and reduce space occupation.

Optionally, one end of the electrode can be attached between the base 13 and the piezoelectric element 30, and evenly distributed inside the liquid lens 20 around the vertical optical axis, and the other end of the electrode can be routed through the first housing 11 Concentrated on both sides of the shell. Optionally, the other end of the electrode may be electrically connected to the flexible circuit board, and the flexible circuit board may be extended along the inner side wall of the accommodating chamber.

In some embodiments, as shown in FIGS. 3 , 4 , and 7 to 9 , the lens assembly may further include: a first cover 21 and a second cover 22 , and the first cover 21 and the second cover 22 Can be all annular, the edge of liquid lens 20 can be positioned between the first cover body 21 and the second cover body 22, the liquid lens 20 can be circular, the axis of liquid lens 20 can be with the first cover body 21 and the second cover body 22. The axes of the cover body 22 are collinear, and the second cover body 22 is arranged on the bracket. The first cover body 21 and the second cover body 22 can play a role in restricting the displacement of the liquid lens and the deformation of the outer profile.

In the embodiment of the present application, the lens assembly may further include: a control module, the control module may control the electrodes to apply voltage to at least one piezoelectric element 30, and the control module may control the electrodes to apply voltage to one or more piezoelectric elements as required. 30 to apply voltage, so that the liquid lens 20 produces the required deformation, and then realizes the precise focus and anti-shake of the liquid lens 20 .

According to some embodiments, there can be multiple piezoelectric elements 30, and the control module can control the electrodes to apply the same voltage to each piezoelectric element 30, so that each piezoelectric element 30 produces the same deformation, so that the liquid lens 20 can focus precisely .

According to some other embodiments, there may be multiple piezoelectric elements 30, and the control module may control the electrodes to apply voltage to the piezoelectric elements 30, and the voltages applied to at least two piezoelectric elements 30 are different, for example, when the lens shakes At this time, the voltages applied to at least two piezoelectric elements 30 can be controlled to be different, so that different parts of the liquid lens 20 are deformed, thereby playing the role of anti-shake.

During the application process, each piezoelectric element 30 can be individually controlled to generate displacements through different deformations, so that the liquid lens 20 can achieve focus or anti-shake. In the normal state, as shown in Figure 7, the adjustment ring 50 does not squeeze the liquid lens 20, which is the normal focal length at this time; The ring 50 moves along the optical axis of the lens to squeeze the liquid lens 20; as shown in Figure 9, during anti-shake, the focus object can be tracked through the influence algorithm, and the amount of displacement compensation generated by each piezoelectric element 30 can be controlled to achieve anti-shake.

An embodiment of the present application provides an electronic device, including the lens assembly described in the foregoing embodiments. The electronic device with the lens assembly in the above embodiment can make the focusing of the lens more precise, avoid the problem of lens shaking, and improve the shooting effect.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementation should not be considered beyond the scope of the present disclosure.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

Claims

A lens assembly, comprising:

base;

an imaging module, the imaging module is arranged on the base;

A liquid lens, the liquid lens can be deformed, and the liquid lens can focus during the deformation process of the liquid lens, and the liquid lens and the imaging module are arranged at intervals in the axial direction of the imaging module;

a piezoelectric element, the piezoelectric element is disposed adjacent to the liquid lens;

An electrode, the electrode is connected to the piezoelectric element, and when the electrode applies a voltage to the piezoelectric element, the piezoelectric element deforms along the axial direction of the liquid lens, and the piezoelectric element The deformation drives the deformation of the liquid lens.
The lens assembly according to claim 1, wherein there are a plurality of piezoelectric elements, and the plurality of piezoelectric elements are disposed on one side of the liquid lens and arranged at intervals along the circumference of the liquid lens.
The lens assembly according to claim 1, wherein the piezoelectric element is disposed on a side of the liquid lens close to the imaging module.
The lens assembly according to claim 1, wherein the electrode comprises:

The first electrode and the second electrode, the piezoelectric element is located between the first electrode and the second electrode, the first electrode and the second electrode are arranged at intervals along the axial direction of the liquid lens .
The lens assembly according to claim 1, further comprising:

An adjustment ring, the adjustment ring is arranged between the piezoelectric element and the liquid lens.
The lens assembly according to claim 1, wherein said base comprises:

A housing, the housing is provided with an accommodating cavity, and the imaging module is arranged in the accommodating cavity;

A bracket, the bracket is arranged on the housing, and the liquid lens is arranged on the bracket.
The lens assembly according to claim 6, wherein said housing comprises:

A first housing and a second housing, the accommodating cavity is arranged on the first housing, and the first housing is connected to the second housing;

The bracket includes a leg and an annular frame body, one end of the leg is connected to the frame body, and the other end of the leg is connected to the first shell and the second shell.
The lens assembly according to claim 6, wherein one end of the electrode is connected to the piezoelectric element, and the other end of the electrode extends into the accommodation cavity.
The lens assembly according to claim 6, further comprising:

The first cover and the second cover, both of the first cover and the second cover are ring-shaped, and the edge of the liquid lens is located between the first cover and the second cover , the second cover is disposed on the bracket.
The lens assembly according to claim 1, wherein the lens assembly further comprises:

A control module, the control module controls the electrodes to apply voltage to at least one piezoelectric element.
The lens assembly according to claim 10, wherein there are multiple piezoelectric elements, and the control module controls the electrodes to apply the same voltage to each of the piezoelectric elements.
The lens assembly according to claim 10, wherein there are multiple piezoelectric elements, the control module controls the electrodes to apply voltage to the piezoelectric elements, and the piezoelectric elements on at least two The applied voltage is different.
An electronic device, comprising the lens assembly according to any one of claims 1-12.